Hi, I am trying to build a specialist which gives me access to a facade ZClass in front of a XML file. As the XML is already stored, I do not want to store the facade ZClass. Actually, I would like it to be a base on which the skinscript of the specialist's rack can add attributes. So I created a ZClass (HumanClass) with no properties inheriting from ZObject and _ZClass_for_DataSkin. I create a specialist in which the default rack has the following properties : data plug-in : a skinscript computing attributes based on an id and the xml. storage : Class to use for stored items: HumanClass Objects are: loaded by accessing attribute nom (which is defined in the skinscript) Store 'persistent' data: Directly in this object I store no HumanClass instance and try to get an instance : specialist.getItem(anId) I always get None. Am I trying to do something impossible because of lack of understanding or am I just wrong in one property of ZClass, Specialist, Rack ? Thanks a lot -- Godefroid Chapelle BubbleNet sprl rue Victor Horta, 30 1348 Louvain-la-Neuve Belgium Tel 010 457490 Mob 0477 363942 TVA 467 093 008 RC Niv 49849